{"product_id":"ngine-model-building-set","title":"L4 Engine Model – Build a Working Engine with Spray \u0026 Sound Building Set","description":"\u003cstyle\u003e\n  \/* ===== 作用域限定：所有样式只影响 .blog-wrap 内部 ===== *\/\n  .blog-wrap,\n  .blog-wrap * {\n    box-sizing: border-box;\n  }\n\n  .blog-wrap {\n    max-width: 840px;\n    width: 100%;\n    margin: 0 auto;\n    background: #0d0c0a;\n    border-radius: 28px;\n    overflow: hidden;\n    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);\n    border: 1px solid #2a2418;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #d0cabb;\n    line-height: 1.65;\n  }\n\n  .blog-wrap .hero {\n    background: linear-gradient(145deg, #0a0906 0%, #16150f 40%, #1c1a14 100%);\n    padding: 32px 24px 26px;\n    border-bottom: 3px solid #d4a030;\n    position: relative;\n    overflow: hidden;\n  }\n\n  .blog-wrap .hero::after {\n    content: '';\n    position: absolute;\n    top: -30%;\n    right: 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.blog-wrap .feature-item { font-size: 10px; padding: 6px 3px; min-height: 44px; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"blog-wrap\"\u003e\n\n  \u003c!-- ================= 顶部展览区 ================= --\u003e\n  \u003cdiv class=\"hero\"\u003e\n    \u003cdiv class=\"hero-badge\"\u003e⚙️ BR0116 L4 Engine Model · 931 Pieces · Dynamic Module Included\u003c\/div\u003e\n    \u003cdiv class=\"hero-title\"\u003e\n\u003cspan class=\"accent\"\u003eBR0116\u003c\/span\u003e Working L4 Engine in Bricks – Motorized Pistons, Spray Effect \u0026amp; 4-Speed Switch\u003c\/div\u003e\n    \u003cdiv class=\"hero-sub\"\u003eBuild a 931-piece L4 engine model with a built-in dynamic module. Motorized pistons, a 4-speed switch, a spray effect, electric gear linkage, and sound effects — all controlled from the battery box. Finished in gold, silver, and black for a striking industrial display.\u003c\/div\u003e\n\n    \u003c!-- 卖点网格：6 项，手机端一行 3 个，共两行 --\u003e\n    \u003cdiv class=\"feature-grid\"\u003e\n      \u003cdiv class=\"feature-item\"\u003e\n\u003cspan class=\"fi-icon\"\u003e⚙️\u003c\/span\u003eL4 Engine Structure\u003c\/div\u003e\n      \u003cdiv class=\"feature-item\"\u003e\n\u003cspan class=\"fi-icon\"\u003e🔄\u003c\/span\u003e4-Speed Switch\u003c\/div\u003e\n      \u003cdiv class=\"feature-item\"\u003e\n\u003cspan class=\"fi-icon\"\u003e💨\u003c\/span\u003eSpray Effect\u003c\/div\u003e\n      \u003cdiv class=\"feature-item\"\u003e\n\u003cspan class=\"fi-icon\"\u003e🔊\u003c\/span\u003eSound Effects\u003c\/div\u003e\n      \u003cdiv class=\"feature-item\"\u003e\n\u003cspan class=\"fi-icon\"\u003e🧩\u003c\/span\u003e931 Bricks\u003c\/div\u003e\n      \u003cdiv class=\"feature-item\"\u003e\n\u003cspan class=\"fi-icon\"\u003e📐\u003c\/span\u003e25.5 cm Long\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"blog-body\"\u003e\n\n    \u003c!-- ===== 展开提示 ===== --\u003e\n    \u003cp class=\"expand-hint\"\u003e👇 Tap the sections below to expand full specifications and FAQ.\u003c\/p\u003e\n\n    \u003c!-- ================= 大折叠 1：产品参数（默认闭合） ================= --\u003e\n    \u003cdetails class=\"master\"\u003e\n      \u003csummary\u003e📋 Product Parameters \u0026amp; Specifications\u003c\/summary\u003e\n      \u003cdiv class=\"master-body\"\u003e\n\n        \u003ch2\u003e⚙️ BR0116 at a Glance\u003c\/h2\u003e\n        \u003cp class=\"intro-text\"\u003e\u003cstrong\u003eBR0116\u003c\/strong\u003e is a \u003cstrong\u003e931-piece L4 engine building set\u003c\/strong\u003e that recreates the structure and motion of a four-cylinder engine in brick form. It includes a \u003cstrong\u003ebuilt-in dynamic function module\u003c\/strong\u003e — a 7号 battery box, sound module, L motor, and sprayer — that brings the model to life. Press the switch and the \u003cstrong\u003epistons move\u003c\/strong\u003e, the \u003cstrong\u003egears turn\u003c\/strong\u003e, the \u003cstrong\u003esprayer releases a fine mist\u003c\/strong\u003e, and the \u003cstrong\u003esound module plays engine audio\u003c\/strong\u003e. The model is finished in a striking \u003cstrong\u003egold, silver, and black\u003c\/strong\u003e colour scheme, with a transparent engine cover that lets you watch the internal mechanics at work. At \u003cstrong\u003e25.5 cm (10.0 in)\u003c\/strong\u003e long and \u003cstrong\u003e20.7 cm (8.1 in)\u003c\/strong\u003e tall, it's a substantial display piece for a desk, shelf, or workshop. Batteries are required and \u003cstrong\u003enot included\u003c\/strong\u003e — please supply your own.\u003c\/p\u003e\n\n        \u003cdiv class=\"feature-callout\"\u003e\n          \u003cp\u003e\u003cstrong\u003e🔧 Built-In Dynamic Module – Interactive Engine Functions\u003c\/strong\u003e\u003cbr\u003eThe BR0116 is more than a static model. It ships with a \u003cstrong\u003e7号电池电源盒（需6颗AAA电池，不含）, sound module, L motor, and sprayer\u003c\/strong\u003e. Once assembled, the engine comes alive: pistons cycle, gears rotate, a fine mist sprays from the exhaust, and engine sound effects play. It's a mechanical \u003cstrong\u003ebuilding set\u003c\/strong\u003e that rewards you with real motion and sound.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"info-panel\"\u003e\n          \u003cp\u003e\u003cstrong\u003ePieces:\u003c\/strong\u003e 931 · \u003cstrong\u003eEngine:\u003c\/strong\u003e L4 · \u003cstrong\u003eBuild time:\u003c\/strong\u003e approx. 6–10 hours\u003c\/p\u003e\n          \u003cp\u003e\u003cstrong\u003eAssembled size:\u003c\/strong\u003e 25.5 × 19 × 20.7 cm (10.0 × 7.5 × 8.1 in)\u003c\/p\u003e\n          \u003cp\u003e\u003cstrong\u003eGift box:\u003c\/strong\u003e 33 × 10 × 22 cm (13.0 × 3.9 × 8.7 in) · \u003cstrong\u003eNet weight:\u003c\/strong\u003e 1.25 kg · \u003cstrong\u003eGross weight:\u003c\/strong\u003e 1.33 kg\u003c\/p\u003e\n          \u003cp\u003e\u003cstrong\u003eColour:\u003c\/strong\u003e Gold, silver, and black with a transparent engine cover\u003c\/p\u003e\n          \u003cp\u003e\u003cstrong\u003eFunctions:\u003c\/strong\u003e 4-speed switch, motorized piston movement, spray effect, electric gear linkage, sound effects\u003c\/p\u003e\n          \u003cp\u003e\u003cstrong\u003ePower:\u003c\/strong\u003e Requires \u003cstrong\u003e6× AAA (7号) batteries\u003c\/strong\u003e for the dynamic module — \u003cstrong\u003ebatteries not included\u003c\/strong\u003e. Please supply your own.\u003c\/p\u003e\n          \u003cp\u003e\u003cstrong\u003eRecommended age:\u003c\/strong\u003e 14+ (adult collectible)\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- 产品参数子折叠 --\u003e\n        \u003cdetails\u003e\n          \u003csummary\u003e📦 Standard Set Contents – Dynamic Engine Model\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cul\u003e\n              \u003cli\u003e\n\u003cstrong\u003e931 precision ABS bricks\u003c\/strong\u003e – in numbered bags by build stage\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eGold, silver, and black\u003c\/strong\u003e colour scheme with a transparent engine cover\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eL4 engine structure\u003c\/strong\u003e – visible pistons, crankshaft, and gear linkage\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003e4-speed switch\u003c\/strong\u003e – select different speed settings for the piston motion\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eSpray effect\u003c\/strong\u003e – a fine mist released from the exhaust via the sprayer\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eSound module\u003c\/strong\u003e – plays engine audio when activated\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eDynamic module components:\u003c\/strong\u003e 7号电池电源盒 ×1（需6颗AAA电池，不含）, sound module ×1, L motor ×1, sprayer ×1\u003c\/li\u003e\n              \u003cli\u003eFull-colour \u003cstrong\u003estep-by-step instruction manual\u003c\/strong\u003e\n\u003c\/li\u003e\n            \u003c\/ul\u003e\n            \u003cdiv class=\"note-box\"\u003e\n              \u003cp\u003e\u003cstrong\u003eBatteries not included:\u003c\/strong\u003e The dynamic module requires \u003cstrong\u003e6× AAA (7号) batteries\u003c\/strong\u003e. They are \u003cstrong\u003enot included\u003c\/strong\u003e — please supply your own. Check the manual for the specific battery type.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e🎮 Dynamic Functions – How It Works\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cul\u003e\n              \u003cli\u003e\n\u003cstrong\u003e🔄 4-speed switch:\u003c\/strong\u003e Select between four speed settings to change the pace of the piston movement — from a slow idle to a fast rev\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003e⚙️ Motorized piston movement:\u003c\/strong\u003e The L motor drives the pistons up and down inside the transparent engine block, mimicking a real engine cycle\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003e💨 Spray effect:\u003c\/strong\u003e The sprayer releases a fine mist from the exhaust outlet — use \u003cstrong\u003eclean water only\u003c\/strong\u003e (no oils or chemicals)\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003e🔊 Sound effects:\u003c\/strong\u003e The sound module plays engine audio, synced with the dynamic motion, for an immersive mechanical experience\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003e🔗 Electric gear linkage:\u003c\/strong\u003e The gears rotate in sync with the pistons, visible through the transparent cover\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003e💡 Precision mechanical structure:\u003c\/strong\u003e Every internal component is faithfully reproduced — crankshaft, connecting rods, and gear train\u003c\/li\u003e\n            \u003c\/ul\u003e\n            \u003cdiv class=\"note-box\"\u003e\n              \u003cp\u003e\u003cstrong\u003eBattery note:\u003c\/strong\u003e The dynamic module requires \u003cstrong\u003e6× AAA (7号) batteries\u003c\/strong\u003e. Batteries are \u003cstrong\u003enot included\u003c\/strong\u003e — please supply your own. Use clean water only in the sprayer.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e🟡 Design \u0026amp; Colour – Gold, Silver \u0026amp; Black\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cul\u003e\n              \u003cli\u003e\n\u003cstrong\u003eGold accents\u003c\/strong\u003e on the engine block and internal components — a premium, industrial look\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eSilver structural elements\u003c\/strong\u003e for the frame, pipes, and outer casing\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eBlack base and trim\u003c\/strong\u003e that grounds the model and adds contrast\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eTransparent engine cover\u003c\/strong\u003e — lets you see the pistons, gears, and crankshaft in motion\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eCompact footprint\u003c\/strong\u003e — 25.5 × 19 × 20.7 cm assembled, ideal for a desk or shelf\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eCollector-grade build\u003c\/strong\u003e — a striking centrepiece for any mechanical model collection\u003c\/li\u003e\n            \u003c\/ul\u003e\n            \u003cdiv class=\"note-box\"\u003e\n              \u003cp\u003e\u003cstrong\u003eDisplay \u0026amp; interact:\u003c\/strong\u003e The BR0116 works as both an interactive electric model and a static display piece. The transparent cover and gold\/silver finish make it a standout on any shelf or workbench.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e📐 How Large Is BR0116?\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003e\u003cstrong\u003eAssembled size:\u003c\/strong\u003e 25.5 × 19 × 20.7 cm (10.0 × 7.5 × 8.1 in)\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003eGift box:\u003c\/strong\u003e 33 × 10 × 22 cm (13.0 × 3.9 × 8.7 in) · \u003cstrong\u003ePieces:\u003c\/strong\u003e 931 · \u003cstrong\u003eNet weight:\u003c\/strong\u003e 1.25 kg · \u003cstrong\u003eGross weight:\u003c\/strong\u003e 1.33 kg\u003c\/p\u003e\n            \u003cdiv class=\"note-box\"\u003e\n              \u003cp\u003e\u003cstrong\u003eDesk-friendly footprint:\u003c\/strong\u003e At 25.5 cm long and 20.7 cm tall, the assembled L4 engine sits securely on a flat surface — ideal for a desk, shelf, or workshop bench.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e⏳ Build Experience\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003e\u003cstrong\u003eEstimated build time:\u003c\/strong\u003e approximately \u003cstrong\u003e6–10 hours\u003c\/strong\u003e. The build includes the engine structure, the dynamic module, and the transparent cover. It's a satisfying project for adult builders who enjoy mechanical detail. Numbered bags and a full-colour manual guide each stage.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e🎯 Who This Build Is For\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cul class=\"check-list\"\u003e\n              \u003cli\u003e\n\u003cstrong\u003eAdult builders\u003c\/strong\u003e who enjoy mechanical, engineering-themed \u003cstrong\u003ebuilding sets\u003c\/strong\u003e\n\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eEngine enthusiasts\u003c\/strong\u003e who appreciate the structure and motion of a four-cylinder engine\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eCollectors\u003c\/strong\u003e looking for a unique, interactive \u003cstrong\u003ebrick model\u003c\/strong\u003e with electric functions\u003c\/li\u003e\n              \u003cli\u003e\n\u003cstrong\u003eGift seekers\u003c\/strong\u003e — a premium present for a mechanic, engineer, or brick fan\u003c\/li\u003e\n            \u003c\/ul\u003e\n            \u003cdiv class=\"note-box\"\u003e\n              \u003cp\u003e\u003cstrong\u003eRecommended age:\u003c\/strong\u003e 14 and up. This is an \u003cstrong\u003eadult collectible\u003c\/strong\u003e with small parts — not suitable for children under 3.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e📋 Full Specifications\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e BRICKROYAL · \u003cstrong\u003eSKU:\u003c\/strong\u003e BR0116 · \u003cstrong\u003ePieces:\u003c\/strong\u003e 931\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e L4 engine model · \u003cstrong\u003eAssembled size:\u003c\/strong\u003e 25.5 × 19 × 20.7 cm (10.0 × 7.5 × 8.1 in)\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003eGift box:\u003c\/strong\u003e 33 × 10 × 22 cm (13.0 × 3.9 × 8.7 in) · \u003cstrong\u003eNet weight:\u003c\/strong\u003e 1.25 kg · \u003cstrong\u003eGross weight:\u003c\/strong\u003e 1.33 kg\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003eRecommended age:\u003c\/strong\u003e 14+ (adult collectible)\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003eColour:\u003c\/strong\u003e Gold, silver, and black with a transparent engine cover\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e 931 bricks, 7号电池电源盒 ×1（需6颗AAA电池，不含）, sound module ×1, L motor ×1, sprayer ×1\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003eFunctions:\u003c\/strong\u003e 4-speed switch, motorized piston movement, spray effect, electric gear linkage, sound effects\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003ePower:\u003c\/strong\u003e Requires \u003cstrong\u003e6× AAA (7号) batteries\u003c\/strong\u003e for the dynamic module — \u003cstrong\u003ebatteries not included\u003c\/strong\u003e. Please supply your own.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e⚠️ Safety \u0026amp; Care\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003e\u003cstrong\u003eSafety warning:\u003c\/strong\u003e Contains small parts — \u003cstrong\u003echoking hazard\u003c\/strong\u003e. Not suitable for children under 14. Keep loose parts away from infants and toddlers. All bricks are made from non-toxic ABS material intended for adult-oriented model construction.\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003eBattery note:\u003c\/strong\u003e The dynamic module requires \u003cstrong\u003e6× AAA (7号) batteries\u003c\/strong\u003e. They are \u003cstrong\u003enot included\u003c\/strong\u003e — please supply your own. Follow the wiring instructions and battery safety guidance in the manual.\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003eSprayer note:\u003c\/strong\u003e Use \u003cstrong\u003eclean water only\u003c\/strong\u003e in the sprayer — no oils, fragrances, or chemicals. Do not aim the spray at people or eyes.\u003c\/p\u003e\n            \u003cp\u003e\u003cstrong\u003eCare:\u003c\/strong\u003e Dust with a \u003cstrong\u003esoft dry cloth\u003c\/strong\u003e and keep out of prolonged direct sun to protect the finish. Avoid moisture on the electrical components.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003c!-- ================= 大折叠 2：FAQ + 售后 + 品牌授权（默认闭合） ================= --\u003e\n    \u003cdetails class=\"master\"\u003e\n      \u003csummary\u003e❓ Real Questions, Straight Answers (FAQ)\u003c\/summary\u003e\n      \u003cdiv class=\"master-body\"\u003e\n\n        \u003cp class=\"sub\"\u003eWhat builders ask before choosing this L4 engine model.\u003c\/p\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e“Do the pistons actually move, or is it just a static model?”\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003eThe pistons move. The BR0116 includes an \u003cstrong\u003eL motor\u003c\/strong\u003e that drives the pistons up and down inside the transparent engine block. The motion is visible through the cover, and the gears rotate in sync. It's a fully interactive \u003cstrong\u003emechanical building set\u003c\/strong\u003e — not a static display.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e“Are batteries included?”\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e The dynamic module requires \u003cstrong\u003e6× AAA (7号) batteries\u003c\/strong\u003e for the motor, sound, and spray functions. A 7号电池电源盒 is included, but the batteries themselves are \u003cstrong\u003enot included\u003c\/strong\u003e — please supply your own. Check the manual for the exact battery type.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e“What goes in the sprayer?”\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003e\u003cstrong\u003eClean water only\u003c\/strong\u003e — nothing else. Oils, fragrances, or chemicals can clog or damage the sprayer. Follow the manual for the fill level and don't run it dry.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e“How does the 4-speed switch work?”\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003eThe 4-speed switch lets you select between four speed settings for the piston movement. Turn the switch to change the pace — from a slow idle to a fast rev. It adds a layer of interactivity to the model.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e“Does it make engine sounds?”\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003eYes — the included sound module plays engine audio when the dynamic module is activated. The sound is synced with the piston motion for an immersive mechanical experience.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e“How difficult is the build at 931 pieces?”\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003e\u003cstrong\u003eMid-to-high difficulty\u003c\/strong\u003e — recommended for experienced builders aged 14+. The engine structure and dynamic module assembly are the most technically interesting parts. Numbered bags and a full-colour manual keep each phase manageable. Estimated build time is \u003cstrong\u003e6–10 hours\u003c\/strong\u003e.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e“Can I display it when it's not running?”\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003eAbsolutely. The BR0116 is designed to look great as a display piece. The gold\/silver\/black colour scheme and transparent engine cover make it a striking addition to any desk, shelf, or workshop. It's both an interactive model and a \u003cstrong\u003ecollector build\u003c\/strong\u003e.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e“What if a piece is missing or damaged?”\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003eWithin \u003cstrong\u003e48 hours of delivery\u003c\/strong\u003e, send us a \u003cstrong\u003eshort unboxing video\u003c\/strong\u003e and \u003cstrong\u003eclear photos\u003c\/strong\u003e to \u003cstrong\u003eadmin@brickroyal.com\u003c\/strong\u003e. We'll replace any confirmed missing or damaged parts \u003cstrong\u003efree of charge\u003c\/strong\u003e — no need to return the set.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e“Is it stable enough to sit on a desk?”\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003eYes. The assembled model measures \u003cstrong\u003e25.5 × 19 × 20.7 cm\u003c\/strong\u003e and sits securely on a flat surface. The base is wide and stable. Place it on a sturdy desk or shelf.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails\u003e\n          \u003csummary\u003e“Is this suitable for children?”\u003c\/summary\u003e\n          \u003cdiv class=\"content\"\u003e\n            \u003cp\u003eThe BR0116 is an \u003cstrong\u003eadult collectible\u003c\/strong\u003e with many small parts — it is \u003cstrong\u003enot a toy for young children\u003c\/strong\u003e. We recommend it for ages 14 and up. It's \u003cstrong\u003enot suitable for children under 3\u003c\/strong\u003e (choking hazard).\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n\n        \u003c!-- CTA 框 --\u003e\n        \u003cdiv class=\"cta-box\"\u003e\n          \u003cp\u003e⚙️ Build the L4 Engine. Press Start. Watch It Run.\u003c\/p\u003e\n          \u003cp class=\"sub\"\u003e931 pieces · Interactive motorized pistons, spray effect, gear linkage \u0026amp; sound.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- 信任标识 --\u003e\n        \u003cdiv class=\"trust-row\"\u003e\n          \u003cspan class=\"trust-badge\"\u003e✅ Authorized Brand Seller\u003c\/span\u003e\n          \u003cspan class=\"trust-badge\"\u003e🔒 Secure Checkout\u003c\/span\u003e\n          \u003cspan class=\"trust-badge\"\u003e📦 Free Replacements\u003c\/span\u003e\n          \u003cspan class=\"trust-badge\"\u003e⚙️ Dynamic Module Included\u003c\/span\u003e\n        \u003c\/div\u003e\n\n        \u003c!-- 品牌授权 \u0026 Legal --\u003e\n        \u003cdiv class=\"legal-details\"\u003e\n\n          \u003cdetails\u003e\n            \u003csummary\u003e🛡️ Brand Authorization \u0026amp; IP Notice — tap to view\u003c\/summary\u003e\n            \u003cdiv class=\"content\"\u003e\n              \u003cp\u003eBrickRoyal is operated by \u003cstrong\u003eJiduoduo Co., Limited\u003c\/strong\u003e, which holds written authorization from the respective trademark owners to sell authorised products through brickroyal.com. Authorization period: \u003cstrong\u003eAug 10, 2026 – Aug 10, 2027\u003c\/strong\u003e.\u003c\/p\u003e\n              \u003ctable\u003e\n                \u003ctbody\u003e\n                  \u003ctr\u003e\n                    \u003cth\u003eAuthorised Brand\u003c\/th\u003e\n                    \u003cth\u003eReg. No.\u003c\/th\u003e\n                    \u003cth\u003ePeriod\u003c\/th\u003e\n                  \u003c\/tr\u003e\n                  \u003ctr\u003e\n                    \u003ctd\u003eZxinzhuan\u003c\/td\u003e\n                    \u003ctd\u003e82389387\u003c\/td\u003e\n                    \u003ctd\u003eAug 10, 2026 – Aug 10, 2027\u003c\/td\u003e\n                  \u003c\/tr\u003e\n                  \u003ctr\u003e\n                    \u003ctd\u003eGULY\u003c\/td\u003e\n                    \u003ctd\u003e81236738\u003c\/td\u003e\n                    \u003ctd\u003eAug 10, 2026 – Aug 10, 2027\u003c\/td\u003e\n                  \u003c\/tr\u003e\n                  \u003ctr\u003e\n                    \u003ctd\u003eShuanggao\u003c\/td\u003e\n                    \u003ctd\u003e25523691\u003c\/td\u003e\n                    \u003ctd\u003eAug 10, 2026 – Aug 10, 2027\u003c\/td\u003e\n                  \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n              \u003c\/table\u003e\n              \u003cdiv class=\"note\"\u003e\n                \u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Trademark authorisation does not grant rights to any third-party IP — vehicle designs, character names, artwork, logos, or other trademarks remain separate matters.\u003c\/p\u003e\n              \u003c\/div\u003e\n              \u003cp style=\"font-size: 11.5px; color: #8a8272;\"\u003eJiduoduo Co., Limited · 2601, 26\/F, Delta House, No. 3 On Yiu Street, Sha Tin, New Territories, Hong Kong SAR · +852 9324 7082 · Mon–Fri 9:00–18:30 HKT. Brand enquiries: \u003cstrong\u003esupport@brickroyal.com\u003c\/strong\u003e. © 2026–Present BrickRoyal.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/details\u003e\n\n          \u003cdetails\u003e\n            \u003csummary\u003e⚖️ Legal, Brand \u0026amp; Disclaimers\u003c\/summary\u003e\n            \u003cdiv class=\"content\"\u003e\n              \u003cp\u003eBrickRoyal is an independent brand. BR0116 is an original design and is \u003cstrong\u003enot affiliated with, licensed by, or endorsed by\u003c\/strong\u003e the LEGO Group, or by any other building block brand, automotive manufacturer, or engine manufacturer.\u003c\/p\u003e\n              \u003cp\u003eAfter-sales: \u003cstrong\u003eadmin@brickroyal.com\u003c\/strong\u003e · General: \u003cstrong\u003esupport@brickroyal.com\u003c\/strong\u003e\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/details\u003e\n\n        \u003c\/div\u003e\n\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BrickRoyal","offers":[{"title":"Default Title","offer_id":44532035977329,"sku":"BR0116","price":169.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/2803\/5185\/files\/L4EngineModelBuildaWorkingEnginewithSpray_Sound.png?v=1789123048","url":"https:\/\/brickroyal.com\/products\/ngine-model-building-set","provider":"BrickRoyal","version":"1.0","type":"link"}